How to make an octagon:
1. Using a straight edge, divide a paper plate into eight sections.
2. Cut straight lines around the edge connecting each of the pencil lines you drew.
3. You now have eight sides!
We painted it red and used another paper plate to cut out our STOP letters. This turned out to be a great simple activity because it involved painting, math skills (an octagon), letter recognition/reading the word "STOP", the color red, and he likes to put on his police hat and vest and "direct traffic" with it.